(4-Oxo-4H-quinazolin-3-yl)-acetic acid is primarily utilized in the field of medicinal chemistry and drug development. It serves as a key intermediate in the synthesis of various biologically active compounds, particularly those targeting enzymes and receptors involved in disease pathways. Its quinazoline core structure is often incorporated into molecules designed for anticancer, anti-inflammatory, and antimicrobial applications. Researchers leverage its chemical framework to develop inhibitors for specific protein targets, such as kinases, which play a critical role in cell signaling and cancer progression. Additionally, its derivatives are explored for their potential in treating neurological disorders due to their ability to modulate certain neurotransmitter systems. The compound’s versatility in organic synthesis makes it a valuable building block for creating novel therapeutic agents.